Canada on Tuesday called off a joint celebration with the United States to mark the opening of the Gordie Howe International Bridge, following renewed tariff threats from President Donald Trump.

President Trump is treating one of America's closest allies like an enemy — again.

Ontario Premier Doug Ford on Monday said Trump should offer "his closest allies and friends" support "rather than sit there and threaten tariffs".

President Donald Trump’s latest tariffs could be vulnerable to legal challenge, if they ever take effect, some trade lawyers said on Tuesday.

President Donald Trump has reached back to the Great Depression for an obscure trade weapon he can use to wallop Canada again.

The administration official previewing the action said that Canada was one of the only nations other than China that retaliated against Trump's previous tariffs and must be held accountable.

Canada has signed on as an observer to an international program — made up of Italy, Japan and the U.K. — working to develop the next generation of stealth fighter jets. The move is another example of the federal government diversifying its military partnerships away from the U.

Britain's new government secured an early defense win on Tuesday as Canada joined the delayed GCAP fighter jet program, part of a wider push by European allies to reduce their reliance on U.S. weapons...